Initial SDLGameWindow working on JVM and Deno (#2262)

build.gradle.kts

@@ -93,10 +93,3 @@ tasks {
         )
     }
 }
-
-afterEvaluate {
-    println("-----------")
-    println(tasks.findByPath(":korge:jvmMainClasses")!!::class)
-    println(tasks.findByPath(":korge:compileKotlinJvm")!!::class)
-    //org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-}

korge-core/src/korlibs/render/GameWindow.kt

@@ -43,6 +43,8 @@ data class GameWindowCreationConfig(
     val transparent: Boolean = false,
     /** Allows window to be resizable */
     val resizable: Boolean = true,
+    /** */
+    val title: String = "",
     //val allowMinimize: Boolean = true,
     //val allowMaximize: Boolean = true,
 ) {

korge-core/src/korlibs/sdl/SDL.kt

@@ -0,0 +1,36 @@
+package korlibs.sdl
+
+import korlibs.annotations.*
+import korlibs.ffi.*
+
+val SDLPath by lazy {
+    //"https://github.com/libsdl-org/SDL/releases/download/release-2.30.5/SDL2-2.30.5-win32-x64.zip"
+    //"SDL"
+    "C:\\temp\\SDL2.dll"
+}
+
+@KeepNames
+open class SDL : FFILib(SDLPath) {
+    companion object {
+        const val SDL_WINDOWPOS_UNDEFINED = 0x1FFF0000
+        const val SDL_WINDOWPOS_CENTERED = 0x2FFF0000
+
+        // https://wiki.libsdl.org/SDL2/SDL_WindowFlags
+        // SDL_WindowFlags
+        const val SDL_WINDOW_OPENGL = 0x2
+        const val SDL_WINDOW_RESIZABLE = 0x20
+
+        // https://wiki.libsdl.org/SDL2/SDL_Event
+        // SDL_Event
+        const val SDL_QUIT = 0x100
+    }
+
+    val SDL_Init by func<(flags: Int) -> Int>()
+    val SDL_CreateWindow by func<(title: String, x: Int, y: Int, w: Int, h: Int, flags: Int) -> FFIPointer>()
+    val SDL_SetWindowTitle by func<(window: FFIPointer, title: String) -> Unit>()
+    val SDL_SetWindowSize by func<(window: FFIPointer, w: Int, h: Int) -> Unit>()
+    val SDL_ShowWindow by func<(window: FFIPointer) -> Unit>()
+    val SDL_RaiseWindow by func<(window: FFIPointer) -> Unit>()
+    val SDL_PollEvent by func<(event: FFIPointer) -> Boolean>()
+    val SDL_Quit by func<() -> Unit>()
+}

korge-core/src/korlibs/sdl/SDLGameWindow.kt

@@ -0,0 +1,60 @@
+package korlibs.sdl
+
+import korlibs.ffi.*
+import korlibs.graphics.*
+import korlibs.graphics.log.*
+import korlibs.math.geom.*
+import korlibs.render.*
+
+abstract class SDLGameWindow(
+    var size: Size = Size(640, 480),
+    val config: GameWindowCreationConfig = GameWindowCreationConfig.DEFAULT,
+) : GameWindow() {
+    val sdl: SDL = SDL()
+    val window = sdl.SDL_CreateWindow(
+        config.title,
+        SDL.SDL_WINDOWPOS_CENTERED, SDL.SDL_WINDOWPOS_CENTERED,
+        size.width.toInt(), size.height.toInt(),
+        SDL.SDL_WINDOW_RESIZABLE or SDL.SDL_WINDOW_OPENGL
+    )
+    init {
+        sdl.SDL_ShowWindow(window)
+    }
+
+    override val ag: AG = AGDummy()
+
+    //override var title: String = ""
+    //    set(value) {
+    //        field = value
+    //        sdl.SDL_SetWindowTitle(window, title)
+    //    }
+//
+    //override fun setSize(width: Int, height: Int) {
+    //    sdl.SDL_SetWindowSize(window, width, height)
+    //}
+
+    fun init() {
+        //SDL.SDL_WINDOWPOS_CENTERED
+    }
+
+    val event = CreateFFIMemory(1024)
+
+    fun updateSDLEvents() {
+        event.usePointer {
+            while (sdl.SDL_PollEvent(it)) {
+                val type = it.getS32(0)
+                when (type) {
+                    SDL.SDL_QUIT -> {
+                        close()
+                    }
+                }
+                println("EVENT: type=$type")
+            }
+        }
+    }
+
+    override fun close(exitCode: Int) {
+        super.close(exitCode)
+        sdl.SDL_Quit()
+    }
+}

korge-core/src@js/korlibs/render/DefaultGameWindowJs.kt

@@ -552,10 +552,8 @@ private external interface JsGamepadEvent {
 
 class NodeJsGameWindow : JsGameWindow()
 
-class DenoJsGameWindow : JsGameWindow()
-
 actual fun CreateDefaultGameWindow(config: GameWindowCreationConfig): GameWindow = when {
-    Platform.isJsDenoJs -> DenoJsGameWindow()
+    Platform.isJsDenoJs -> DenoJsGameWindow(config = config)
     Platform.isJsNodeJs -> NodeJsGameWindow()
     else -> BrowserCanvasJsGameWindow()
 }

korge-core/src@js/korlibs/render/DenoJsGameWindow.kt

@@ -0,0 +1,34 @@
+package korlibs.render
+
+import korlibs.io.async.*
+import korlibs.js.*
+import korlibs.math.geom.*
+import korlibs.platform.*
+import korlibs.sdl.*
+import kotlinx.coroutines.*
+import org.w3c.dom.*
+import kotlin.js.*
+
+class DenoJsGameWindow(
+    size: Size = Size(640, 480),
+    config: GameWindowCreationConfig = GameWindowCreationConfig.DEFAULT,
+) : SDLGameWindow(size, config) {
+    override suspend fun loop(entry: suspend GameWindow.() -> Unit) {
+        launchImmediately(getCoroutineDispatcherWithCurrentContext()) {
+            entry()
+        }
+
+        jsGlobalThis.setInterval({
+            //println("INTERVAL")
+            updateSDLEvents()
+            frame()
+        }, 16)
+
+        //CompletableDeferred<Unit>().await()
+    }
+
+    override fun close(exitCode: Int) {
+        super.close(exitCode)
+        Deno.exit(exitCode)
+    }
+}

korge-core/test/korlibs/sdl/SDLTest.kt

@@ -0,0 +1,36 @@
+package korlibs.sdl
+
+import korlibs.concurrent.thread.*
+import korlibs.ffi.*
+import korlibs.io.async.*
+import korlibs.time.*
+import kotlinx.coroutines.*
+import kotlin.test.*
+
+class SDLTest {
+    @Ignore
+    @Test
+    fun test() = suspendTest {
+        val sdl = SDL()
+        try {
+            sdl.SDL_Init(0)
+            val window = sdl.SDL_CreateWindow("hello world", SDL.SDL_WINDOWPOS_CENTERED, SDL.SDL_WINDOWPOS_CENTERED, 300, 300, SDL.SDL_WINDOW_RESIZABLE or SDL.SDL_WINDOW_OPENGL)
+            sdl.SDL_ShowWindow(window)
+            sdl.SDL_RaiseWindow(window)
+
+            val event = CreateFFIMemory(1024)
+            for (n in 0 until 10000) {
+                event.usePointer {
+                    while (sdl.SDL_PollEvent(it)) {
+                        println(it.getS32(0))
+                    }
+                    //NativeThread.sleep(1.milliseconds)
+                    delay(1.milliseconds)
+                }
+            }
+            sdl.SDL_Quit()
+        } finally {
+            //sdl.close() // @TODO: enable after korlibs -alpha8
+        }
+    }
+}

korge/src/korlibs/korge/Korge.kt

@@ -186,7 +186,9 @@ object KorgeRunner {
         if (!Platform.isJsBrowser) {
             configureLoggerFromProperties(localCurrentDirVfs["klogger.properties"])
         }
-        val realGameWindow = (config.gameWindow ?: coroutineContext[GameWindow] ?: CreateDefaultGameWindow(config.windowCreationConfig))
+        val realGameWindow = (config.gameWindow ?: coroutineContext[GameWindow] ?: CreateDefaultGameWindow(
+            config.windowCreationConfig.copy(title = config.title)
+        ))
         realGameWindow.bgcolor = config.backgroundColor ?: Colors.BLACK
         realGameWindow.loop {
             val gameWindow = this